Date_select and tabindex

Hello everyone,
I want to set tabindex for date_select helper. I tried many times, but
not working.
<%= date_select “user”, “dob”,:start_year=>1960 ,:tabindex=>“4” %>
pls help.
Thanks in advance

Use <%= date_select “user”, “dob”, {:start_year=>1960},
{:tabindex=>“4”} %>
But the tabindex will be the same for all 3 comboboxes.

Dmitry